traefik/docs/configuration/backends/etcd.md

Etcd Provider

Traefik can be configured to use Etcd as a provider.

################################################################
# Etcd Provider
################################################################

# Enable Etcd Provider.
[etcd]

# Etcd server endpoint.
#
# Required
# Default: "127.0.0.1:2379"
#
endpoint = "127.0.0.1:2379"

# Enable watch Etcd changes.
#
# Optional
# Default: true
#
watch = true

# Prefix used for KV store.
#
# Optional
# Default: "/traefik"
#
prefix = "/traefik"

# Override default configuration template.
# For advanced users :)
#
# Optional
#
# filename = "etcd.tmpl"

# Use etcd user/pass authentication.
#
# Optional
#
# username = foo
# password = bar

# Enable etcd TLS connection.
#
# Optional
#
#    [etcd.tls]
#    ca = "/etc/ssl/ca.crt"
#    cert = "/etc/ssl/etcd.crt"
#    key = "/etc/ssl/etcd.key"
#    insecureSkipVerify = true

To enable constraints see provider-specific constraints section.

Please refer to the Key Value storage structure section to get documentation on Traefik KV structure.